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Vulnerability record · CVE-2016-4997 · published 3 July 2016

CVE-2016-4997: Linux kernel permissions and access controls vulnerability

Linux · Linux Kernel

The compat IPT_SO_SET_REPLACE and IP6T_SO_SET_REPLACE setsockopt implementations in the netfilter subsystem in the Linux kernel before 4.6.3 allow local users to gain privileges or cause a denial of service (memory corruption) by leveraging in-container root access to provide a crafted offset value that triggers an unintended decrement.

7.8 CVSS 3.1 High EPSS 7.0% · top 6.1% CWE-264 · Permissions and access controls
7.8CVSS 3.1 base score, v2 7.2
7.0%EPSS exploitation probability, 30 days
NoNot in CISA KEV
11Affected product versions listed by NVD
86References, 4 tagged exploit
17 Jun 2026Last modified by NVD

Description

The compat IPT_SO_SET_REPLACE and IP6T_SO_SET_REPLACE setsockopt implementations in the netfilter subsystem in the Linux kernel before 4.6.3 allow local users to gain privileges or cause a denial of service (memory corruption) by leveraging in-container root access to provide a crafted offset value that triggers an unintended decrement.

CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

Affected products

11 vulnerable configurations from NVD's CPE data, grouped by vendor and product.

References

LinkTags
http://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git/commit/?id=ce683e5f9d045e5d67d1312a42b359cb2ab2a13c Vendor Advisory
http://lists.opensuse.org/opensuse-security-announce/2016-06/msg00060.html Third Party Advisory
http://lists.opensuse.org/opensuse-security-announce/2016-06/msg00061.html Third Party Advisory
http://lists.opensuse.org/opensuse-security-announce/2016-08/msg00000.html Third Party Advisory
http://lists.opensuse.org/opensuse-security-announce/2016-08/msg00007.html Mailing ListThird Party Advisory
http://lists.opensuse.org/opensuse-security-announce/2016-08/msg00027.html Mailing ListThird Party Advisory
http://lists.opensuse.org/opensuse-security-announce/2016-08/msg00044.html Mailing ListThird Party Advisory
http://lists.opensuse.org/opensuse-security-announce/2016-08/msg00048.html Mailing ListThird Party Advisory
http://lists.opensuse.org/opensuse-security-announce/2016-08/msg00050.html Mailing ListThird Party Advisory
http://lists.opensuse.org/opensuse-security-announce/2016-08/msg00051.html Mailing ListThird Party Advisory
http://lists.opensuse.org/opensuse-security-announce/2016-08/msg00052.html Mailing ListThird Party Advisory
http://lists.opensuse.org/opensuse-security-announce/2016-08/msg00053.html Mailing ListThird Party Advisory
http://lists.opensuse.org/opensuse-security-announce/2016-08/msg00054.html Mailing ListThird Party Advisory
http://lists.opensuse.org/opensuse-security-announce/2016-08/msg00055.html Mailing ListThird Party Advisory
http://rhn.redhat.com/errata/RHSA-2016-1847.html Third Party Advisory
http://rhn.redhat.com/errata/RHSA-2016-1875.html Third Party Advisory
http://rhn.redhat.com/errata/RHSA-2016-1883.html Third Party Advisory
http://www.debian.org/security/2016/dsa-3607 Third Party Advisory
http://www.kernel.org/pub/linux/kernel/v4.x/ChangeLog-4.6.3 Vendor Advisory
http://www.openwall.com/lists/oss-security/2016/06/24/5 Mailing ListThird Party Advisory
http://www.openwall.com/lists/oss-security/2016/09/29/10 ExploitMailing ListThird Party Advisory
http://www.oracle.com/technetwork/topics/security/linuxbulletinjul2016-3090544.html Third Party Advisory
http://www.oracle.com/technetwork/topics/security/linuxbulletinoct2016-3090545.html Third Party Advisory
http://www.oracle.com/technetwork/topics/security/ovmbulletinoct2016-3090547.html Third Party Advisory
http://www.securityfocus.com/bid/91451 Third Party AdvisoryVDB Entry
http://www.securitytracker.com/id/1036171 Third Party AdvisoryVDB Entry
http://www.ubuntu.com/usn/USN-3016-1 Third Party Advisory
http://www.ubuntu.com/usn/USN-3016-2 Third Party Advisory
http://www.ubuntu.com/usn/USN-3016-3 Third Party Advisory
http://www.ubuntu.com/usn/USN-3016-4 Third Party Advisory
http://www.ubuntu.com/usn/USN-3017-1 Third Party Advisory
http://www.ubuntu.com/usn/USN-3017-2 Third Party Advisory
http://www.ubuntu.com/usn/USN-3017-3 Third Party Advisory
http://www.ubuntu.com/usn/USN-3018-1 Third Party Advisory
http://www.ubuntu.com/usn/USN-3018-2 Third Party Advisory
http://www.ubuntu.com/usn/USN-3019-1 Third Party Advisory
http://www.ubuntu.com/usn/USN-3020-1 Third Party Advisory
https://bugzilla.redhat.com/show_bug.cgi?id=1349722 Issue TrackingThird Party Advisory
https://github.com/nccgroup/TriforceLinuxSyscallFuzzer/tree/master/crash_reports/report_compatIpt ExploitThird Party Advisory
https://github.com/torvalds/linux/commit/ce683e5f9d045e5d67d1312a42b359cb2ab2a13c PatchThird Party Advisory

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Source: NIST National Vulnerability Database (record CVE-2016-4997), CISA KEV, FIRST EPSS (scores of 2026-09-27). This page is refreshed as NVD updates the record.